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TMI-143: Support for CMYK JPEG in TIFF.

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This commit is contained in:
Harald Kuhr 2015-06-11 11:28:31 +02:00
parent 3bdc117aa3
commit da8a013575
4 changed files with 33 additions and 21 deletions
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50
imageio/imageio-tiff/src/main/java/com/twelvemonkeys/imageio/plugins/tiff/TIFFImageReader.java
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@ -585,6 +585,7 @@ public class TIFFImageReader extends ImageReaderBase {
int tilesAcross = (width + stripTileWidth - 1) / stripTileWidth;
int tilesDown = (height + stripTileHeight - 1) / stripTileHeight;
WritableRaster rowRaster = rawType.getColorModel().createCompatibleWritableRaster(stripTileWidth, 1);
Rectangle clip = new Rectangle(srcRegion);
int row = 0;
switch (compression) {
@ -704,7 +705,6 @@ public class TIFFImageReader extends ImageReaderBase {
}
// Clip the stripTile rowRaster to not exceed the srcRegion
Rectangle clip = new Rectangle(srcRegion);
clip.width = Math.min((colsInTile + xSub - 1) / xSub, srcRegion.width);
Raster clippedRow = clipRowToRect(rowRaster, clip,
param != null ? param.getSourceBands() : null,
@ -778,11 +778,18 @@ public class TIFFImageReader extends ImageReaderBase {
try {
jpegReader.setInput(subStream);
jpegParam.setSourceRegion(new Rectangle(0, 0, colsInTile, rowsInTile));
jpegParam.setDestinationOffset(new Point(col - srcRegion.x, row - srcRegion.y));
jpegParam.setDestination(destination);
// TODO: This works only if Gray/YCbCr/RGB, not CMYK/LAB/etc...
// In the latter case we will have to use readAsRaster and do color conversion ourselves
jpegReader.read(0, jpegParam);
if (interpretation == TIFFExtension.PHOTOMETRIC_YCBCR) {
jpegParam.setDestinationOffset(new Point(col - srcRegion.x, row - srcRegion.y));
jpegParam.setDestination(destination);
jpegReader.read(0, jpegParam);
}
else {
// Otherwise, it's likely CMYK or some other interpretation we don't need to convert.
// We'll have to use readAsRaster and later apply color space conversion ourselves
Raster raster = jpegReader.readRaster(0, jpegParam);
destination.getRaster().setDataElements(col - srcRegion.x, row - srcRegion.y, raster);
}
}
finally {
subStream.close();
@ -888,10 +895,17 @@ public class TIFFImageReader extends ImageReaderBase {
try {
jpegParam.setSourceRegion(new Rectangle(0, 0, width, height));
jpegParam.setDestination(destination);
// TODO: This works only if Gray/YCbCr/RGB, not CMYK/LAB/etc...
// In the latter case we will have to use readAsRaster and do color conversion ourselves
jpegReader.read(0, jpegParam);
if (interpretation == TIFFExtension.PHOTOMETRIC_YCBCR) {
jpegParam.setDestination(destination);
jpegReader.read(0, jpegParam);
}
else {
// Otherwise, it's likely CMYK or some other interpretation we don't need to convert.
// We'll have to use readAsRaster and later apply color space conversion ourselves
Raster raster = jpegReader.readRaster(0, jpegParam);
destination.getRaster().setDataElements(0, 0, raster);
}
}
finally {
stream.close();
@ -1064,7 +1078,7 @@ public class TIFFImageReader extends ImageReaderBase {
// If we can't get the standard reader, fall back to the default (first) reader
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
if (!readers.hasNext()) {
throw new IIOException("Could not instantiate JPEGImageReader. ");
throw new IIOException("Could not instantiate JPEGImageReader");
}
return readers.next();
@ -1181,9 +1195,7 @@ public class TIFFImageReader extends ImageReaderBase {
// Subsample horizontal
if (xSub != 1) {
for (int x = srcRegion.x / xSub * numBands; x < ((srcRegion.x + srcRegion.width) / xSub) * numBands; x += numBands) {
for (int b = 0; b < numBands; b++) {
rowDataByte[x + b] = rowDataByte[x * xSub + b];
}
System.arraycopy(rowDataByte, x * xSub, rowDataByte, x, numBands);
}
}
@ -1212,13 +1224,13 @@ public class TIFFImageReader extends ImageReaderBase {
// Subsample horizontal
if (xSub != 1) {
for (int x = srcRegion.x / xSub * numBands; x < ((srcRegion.x + srcRegion.width) / xSub) * numBands; x += numBands) {
for (int b = 0; b < numBands; b++) {
rowDataShort[x + b] = rowDataShort[x * xSub + b];
}
System.arraycopy(rowDataShort, x * xSub, rowDataShort, x, numBands);
}
}
raster.setDataElements(startCol, row - srcRegion.y, tileRowRaster);
// TODO: Possible speedup ~30%!:
// raster.setDataElements(startCol, row - srcRegion.y, colsInTile, 1, rowDataShort);
}
// Else skip data
}
@ -1240,9 +1252,7 @@ public class TIFFImageReader extends ImageReaderBase {
// Subsample horizontal
if (xSub != 1) {
for (int x = srcRegion.x / xSub * numBands; x < ((srcRegion.x + srcRegion.width) / xSub) * numBands; x += numBands) {
for (int b = 0; b < numBands; b++) {
rowDataInt[x + b] = rowDataInt[x * xSub + b];
}
System.arraycopy(rowDataInt, x * xSub, rowDataInt, x, numBands);
}
}

4
imageio/imageio-tiff/src/test/java/com/twelvemonkeys/imageio/plugins/tiff/TIFFImageReaderTest.java
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@ -78,7 +78,9 @@ public class TIFFImageReaderTest extends ImageReaderAbstractTest<TIFFImageReader
new TestData(getClassLoaderResource("/tiff/test-single-gray-compression-type-2.tiff"), new Dimension(1728, 1146)), // Gray, CCITT type 2 compressed
new TestData(getClassLoaderResource("/tiff/cramps-tile.tif"), new Dimension(800, 607)), // Gray/WhiteIsZero, uncompressed, striped & tiled...
new TestData(getClassLoaderResource("/tiff/lzw-long-strings-sample.tif"), new Dimension(316, 173)), // RGBA, LZW compressed w/predictor
new TestData(getClassLoaderResource("/tiff/part.tif"), new Dimension(50, 50)) // Gray/BlackIsZero, uncompressed, striped signed int (SampleFormat 2)
new TestData(getClassLoaderResource("/tiff/part.tif"), new Dimension(50, 50)), // Gray/BlackIsZero, uncompressed, striped signed int (SampleFormat 2)
new TestData(getClassLoaderResource("/tiff/cmyk_jpeg_no_profile.tif"), new Dimension(150, 63)), // CMYK, JPEG compressed, no ICC profile
new TestData(getClassLoaderResource("/tiff/cmyk_jpeg.tif"), new Dimension(100, 100)) // CMYK, JPEG compressed, with ICC profile
);
}

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imageio/imageio-tiff/src/test/resources/tiff/cmyk_jpeg.tif Normal file
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imageio/imageio-tiff/src/test/resources/tiff/cmyk_jpeg_no_profile.tif Normal file
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